However, in 2018 two University of Cambridge scientists named their paper The Silurian hypothesis ... life has existed on the Earth's land surface." "This short time period raises the obvious ...

The Paleozoic era's Silurian period saw animals and plants finally emerge on land. But first there was a period of biological regrouping following the disastrous climax to the Ordovician.

But trees didn’t yet exist during the Silurian period, so what exactly was this thing taking over the ancient supercontinent of Gondwana? That argument was never truly settled. Most scientists ...